A 16-year-old Oakland boy died this morning after being wounded early Saturday in a shooting connected to a sideshow in East Oakland, police spokesman Jeff Thomason said.Marco Esparza was pronounced dead at about 8:45 a.m. at a local hospital, Thomason said.Esparza had been in grave condition since the shooting, which was reported at 4:07 a.m. Saturday when a police officer was flagged down at 35th Avenue and Foothill Boulevard.The people who flagged down the officer said a teenage boy in their van had been shot at the intersection of 90th and Bancroft avenues, Thomason said.A 19-year-old man was also shot early Saturday morning at the same sideshow, Thomason said. Sideshows are impromptu events in which crowds gather to watch cars race, spin “donuts” and perform other dangerous maneuvers on city streets.The 19-year-old victim, Jose Avila, walked into a local hospital about 3:25 a.m. Saturday after being shot a short time earlier, Thomason said. He was in critical condition as of Tuesday. No arrests have been made in connection with either shooting. Esparza’s death marks the 62nd homicide of the year in Oakland, Thomason said.Anyone with information about the shootings is encouraged to call the Police Department’s homicide division at (510) 238-3821.